Composition for building materials and process of making the same.



To all whom it may concern STATES PATENT F CE.

ARTHUR H. KRIEGrER, OF LOS ANGEIJES, CALIFORNIA, ASSIGNOR T0 KIESELGUHR COMPANY OF AMERICA, 0]? LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

COMPOSITION FOR BUIIJ DING MATERIALS AND PROCESS OF .11

" :KING' THE SAME No Drawing.

Be it known that I, ARTHUR H. KRIEGER,

a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented a new and useful Composition for Building Materials and Process of Making the Same, which the followingis a specification.

This invention relates to a composition for floor slabs, wall blocks or other structural purposes, and the main object of the invention is to produce an article of this kind which is extremely light and presents suflicient strength for structural purposes, and is an effective insulator for heat and sound.

In order to provide a light composition, I

use, as the mam ingredient, kieselguhr or diatomaceous, or infusorialearth, and as this material is relatively weak in its natural state, I calcine the same sufliciently to impart to it the requisite cohesive strength, the calcined product being then crushed to suitable condition for use as a filler in the composition. Any suitable binder may be used in connection with this filler, but I prefer plaster of Paris.

The composition is preferably made as follows: The kieselguhr, either in its natural'state, or dried, is calcined preferably above a red heat until the required strength is obtained, the temperature being sufficient tocause partial fritting or incipient fusion of the kieselguhr, with resultant increase in stren th and density and some decrease in its porosity. The material is then crushed to approximately 4: mesh and finer and mixed with preferably 30 pounds'of plaster to 100 pounds of kieselguhr taken and with sufficient water to give the proper consistency Specification of Letters Patent.

Patented May 23, 1916.

Application filed March 2, 1914. Serial No. 822,003.

position while still plastic is then molded or poured into suitable forms or molds, and

when it has set it is withdrawn from such molds. 1

The proportions of binder used may be varied, for example, from 15 to per cent. of the amount of kieselguhr.

What I claim is:

1. A composition for structural materials, consistingof fragments of kieselguhr in a partially fritted condition, and a binder. 7

2. A composition for structural materials, consisting of fragments of kieselguhr and a binder, each fragment of kieselguhr being partially fritted to increase its strengh.

3. composition for structural materials',-consisting of fragments of kieselguhr in a partially fritted condition, and a binder composed of plaster of Paris.

4. The process of making a composition block or slab for structural purposes, which consists in calcining kieselguhr at a sufficient temperature to increase its strength, crushing the calcined product to fragmentary. condition, mixing the fragments with a binder and water and molding to shape.

5. The process of making a composition molded body for structural purposes, which consists in calcining kieselguhr at a sufficient temperature to increase its strength, crushing the calcined product to fragmentary condition, mixing the fragments with plaster of Paris and water and molding to shape.

ARTHUR H. KRIEGER. V

Witnesses:

W. DIETERLE, An'rn. MELTZER. 

